TF/TH sensor tripped

What does F-31 mean?

The motor's TF/TH thermal sensor has tripped, indicating the motor is overheating, or there's an issue with the sensor connection. Possible causes include a disconnected, incorrectly wired sensor, or an interrupted connection between the MOVITRAC® B and the sensor. Continued operation with an overheated motor risks severe winding damage.

Complete Troubleshooting Guide

1. 1

   Allow the motor to cool down to a safe operating temperature, then attempt to reset the error.

2. 2

   Check all electrical connections and wiring between the MOVITRAC® B inverter and the motor's TF/TH thermal sensor for integrity and correctness.

3. 3

   Verify the sensor itself for proper function and resistance values.